Knock House, which has five bedrooms and a three-bedroom gatehouse on the estate for guest accommodation, was put up for sale by estate agents Savills earlier this year for offers over £795,000.

It has now been sold to an overseas trust in a £1.4 million deal which also involved the purchase of other properties on the surrounding Knock Castle estate.

During their time at the property, Mr Weir, 69, a retired cameraman for STV and his wife, 60, a former psychiatric nurse, converted old potting sheds in the grounds into a wine cellar and tasting room, a meeting room and an office.

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The sales brochure for the property read: “Knock House is a superbly presented country house in a beautiful and private rural setting.

“The whole property has been completely refurbished and embellished using flair and imagination as well as the best materials and tradesmen around. Nothing has been left to chance including electronic entrance gates… and state-of-the-art security systems.

“In the main house the rooms are bright and where possible take full advantage of the great views. It has a beautiful new kitchen, sun room and three new bathrooms.”

It has now been sold to an overseas trust in a £1.4 million deal which also involved the purchase of other properties on the surrounding Knock Castle estate

The property also has a stable with two paddocks and a jumping field.

The Weirs set up a charitable trust to donate some of their fortune to good causes following their win.

The Weir Charitable Trust has given away more than £6 million to good causes, including buying a clubhouse for Routenburn Golf Club in Largs, upgrading a care home and giving sponsorship to a number of talented youngsters.

Mr Weir, a football fan, helped to refurbish the grounds of Largs Thistle junior football club and gave more than £1 million to Partick Thistle so they could establish a youth academy and clear debts.

Last month it was revealed the couple had donated £1 million to the National Theatre of Scotland to help them a new headquarters in Glasgow

Last month it was revealed the couple had donated £1 million to the National Theatre of Scotland to help them a new headquarters in Glasgow.

The couple have also funded the campaign for Scottish independence. Mr Weir helped to film party political broadcasts for the SNP in the 1980s and stood for the party in the Ayr constituency, coming fourth, in 1987.

They have given several millions to the SNP and to the Yes campaign.

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